Chemia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

Carbon has an atomic mass of 12. What is the mass of 1 mole of carbon atoms?

1. A1 g
2. B12 g
3. C24 g
4. D6 g

Where are the transition metals located on the periodic table?

1. AAbove the noble gases
2. BIn group 18 on the far right
3. CIn group 1 on the far left
4. DIn the central block, groups 3 to 12

Jaki rodzaj wiązania powstaje, gdy atomy uwspólniają elektrony?

1. AWiązanie jonowe
2. BWiązanie kowalencyjne
3. CWiązanie metaliczne
4. DWiązanie jądrowe

Water climbs up a narrow glass tube. Which property mainly causes this?

1. AEvaporation of water from the tube
2. BWater's high boiling point
3. CLow density of water
4. DAdhesion of water to the glass

Radioactive iodine (iodine-131) is used to treat some thyroid conditions. Why does it reach the thyroid?

1. ARadiation is always drawn toward the head
2. BIodine is strongly attracted to the metal ions stored in the neck
3. CThe thyroid gland takes up iodine to make its hormones
4. DIodine-131 is not radioactive inside the body

How should the volume of water in a graduated cylinder be read?

1. AFrom above the cylinder, at the top edge of the curved surface
2. BAt any angle, from the middle of the cylinder
3. CAt eye level, from the bottom of the curved surface (meniscus)
4. DFrom below, at the highest point the water touches the glass

Which substance has the lowest boiling point?

1. AHelium
2. BSodium chloride
3. CIron
4. DWater

A reaction at equilibrium has a very large equilibrium constant (K much greater than 1). What does this tell you?

1. AThe reaction cannot reach equilibrium
2. BAt equilibrium, the mixture contains mostly reactants
3. CAt equilibrium, the mixture contains mostly products
4. DThe reaction is very fast